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BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack
AMAZON.COM
Price
$ 19.29
Last price was updated on: 12th Dec 2025, 08:17 AM
Pricing Analytics & Buying Assistance
Price Score:
Excellent!
Poor
Average
Good
Excellent
Current Price
$19.29
$0.17
Lowest
$59.00
Highest
Buying Advice:
Excellent! Buy now. 52% chance price goes up. Buy soon.
Excellent! Buy now. 52% chance price goes up. Buy soon.
Price History Benchmarks
Lowest Ever
$0.17
21st Jan 2023
Highest Ever
$59.00
10th May 2017
Average Price
$12.84
700 data points
Last 3M Low
$10.99
28th Oct 2025
Last 6M Low
$10.99
28th Oct 2025
Last 12M Low
$10.99
28th Oct 2025
Price History Chart
Product Technical Information
| Product Code | B00O8MVW3U |
|---|---|
| Market Place | amazon.com |
| Market Place Name | Amazon.com |
| Brand Name | BRK |
| Rating | 4.6 ( 18846 ratings ) |
| Category | Smoke Detectors & Fire Alarms |
| Manufacturer | First Alert |
| Model Number | 9120B |
| Item Color | White |
| Item Size | 1-Pack |
| Item Dimensions | 5.6"D x 5.6"W x 2.2"H |
Frequently Asked Questions
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What is the lowest price ever for this product?The lowest price for BRK First Alert 9120BFF SMI100-AC Smoke Detector Hardwired Alarm with Battery Backup White 1-Pack was $0.17 on 21st Jan 2023. This is the best recorded deal so far.
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What is the highest price ever for this product?The highest price for BRK First Alert 9120BFF SMI100-AC Smoke Detector Hardwired Alarm with Battery Backup White 1-Pack was $59.00 on 10th May 2017. Prices have dropped since then.
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What is the average price of this product?The average price for BRK First Alert 9120BFF SMI100-AC Smoke Detector Hardwired Alarm with Battery Backup White 1-Pack is $12.84 (700 data points). This helps you compare current deals.
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What is the lowest price in the last 3 months?In the last 3 months, BRK First Alert 9120BFF SMI100-AC Smoke Detector Hardwired Alarm with Battery Backup White 1-Pack reached a low of $10.99 on 28th Oct 2025. Recent price trends may help you decide when to buy.
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Should I buy this product now?Buy now. The price is excellent compared to its history. 52% chance price goes up. Price may increase soon.